Can Metal Lug Caps Withstand Retort or Pasteurization?

Can Lug Caps Withstand High-Temperature Retort or Pasteurization?

Safety Requirements in the Food and Beverage Industry

In the food and beverage industry, product preservation and safety are always top priorities. To ensure contents remain fresh for extended periods and avoid microbial contamination, factories commonly adopt high-temperature retort sterilization or pasteurization.

These processes place strict demands on caps, requiring heat resistance, pressure resistance, and sealing stability. Otherwise, deformation or liner failure can easily cause leakage. As a result, the question “Can metal lug caps withstand sterilization procedures?” has become a key concern in the industry.

Heat Resistance and Sealing Performance of Lug Caps

Kamellia’s metal lug caps can withstand 121°C for 30 minutes and maintain reliable sealing across various sterilization processes.

• Retort Sterilization

Products are placed in a high-pressure steam environment where the temperature rapidly rises to 121°C, effectively killing bacteria and spores. Through precise forming and liner design, Kamellia’s lug caps remain stable under high temperature and pressure, preventing sealing failure.

• Pasteurization

Performed at lower temperatures (around 60–90°C) but for a longer duration. Kamellia’s lug caps still ensure sealing effectiveness, maintaining product quality and safety during cold-chain transportation and ambient storage.

• Common Applications:
  • Beverages: juice, dairy products, coffee drinks
  • Foods: sauces, jams, condiments
  • Nutritional Supplements: liquid dietary supplements, plant extracts

In other words, whether under short-duration high-temperature retort or long-duration moderate-temperature pasteurization, Kamellia’s lug caps ensure both safety and preservation.

Why Choose Kamellia Lug Caps?

• Professional Expertise

Since 1967, Kamellia has specialized in cap manufacturing for over 50 years, accumulating extensive experience in food-grade packaging.

• Safety Assurance

Uses PVC materials compliant with food hygiene regulations, meeting all required safety standards.

• Strict Quality Control

From coating, printing, molding, to liner inspection, every batch undergoes complete testing, with samples retained for one year. Kamellia is ISO 9001:2015 certified, ensuring both quality and environmental responsibility.

• Production Line Compatibility

Suitable for automated capping and vacuum sealing equipment, optimized for both retort and pasteurization processes to help customers improve efficiency and competitiveness.

Contact Us to Enhance Your Product Competitiveness

For food and beverage manufacturers that require high-temperature or pasteurization processes, cap reliability directly impacts product quality and brand reputation.

Kamellia’s metal lug caps have passed 121°C, 30-minute high-temperature testing, making them the best choice for ensuring quality and efficiency.

Don’t let caps become a hidden risk in your production. Contact Kamellia today to learn more about our heat-resistant metal lug caps, and give your products a stronger advantage in the market.

More Metal Lug Cap FAQ：

1      What is the Difference Between Metal Lug Cap and Regular Bottle Caps?

2      How to Choose the Right Metal Lug Cap for Your Product?

3      What Customization Options Are Available for Metal Lug Caps?

4      How to Choose the Right Metal Lug Cap for Your Product?

5      What Are the Common Applications of Metal Lug Caps?

6     What Are the Materials of Metal Lug Caps? What Are Their Advantages and Disadvantages?

7      What Products Are Metal Lug Caps Suitable For?

8      What Factors Affect the Price of Metal Lug Caps?

9      What Is the Manufacturing Process of Metal Lug Caps?

10   Why Choose Metal Lug Caps Over Plastic Caps?